"As you know, on July 14, 2015, the United States and five other nations announced that a Joint Comprehensive Plan of Action (JCPOA) has been reached with Iran to prevent it from developing nuclear weapons," the letter reads.

"In our judgment as former senior military officers, the agreement will not have that effect. Removing sanctions on Iran and releasing billions of dollars to its regime over the next ten years is inimical to the security of Israel and the Middle East. There is no credibility within JCPOA's inspection process or the ability to snap back sanctions once lifted, should Iran violate the agreement. In this and other respects, the JCPOA would threaten the national security and vital interests of the United States and, therefore, should be disapproved by the Congress.